<template>
    <el-form label-width="70px" size="small">
        <el-form-item label="角色名称">
            <el-input v-model="queryDto.roleName" style="width: 100%" placeholder="角色名称"></el-input>
        </el-form-item>
        <el-row style="display:flex">
            <el-button type="primary" size="small" @click="searchSysRole">
                搜索
            </el-button>
            <el-button size="small" @click="resetData">重置</el-button>
        </el-row>
    </el-form>

    <!-- 添加按钮 -->
    <div class="tools-div">
        <el-button type="success" size="small" @click="addShow">添 加</el-button>
    </div>

    <!-- 添加角色表单对话框 -->
    <el-dialog v-model="dialogVisible" title="添加或修改角色" width="30%">
        <el-form label-width="120px">
            <el-form-item label="角色名称">
                <el-input v-model="sysRole.roleName" />
            </el-form-item>
            <el-form-item label="角色Code">
                <el-input v-model="sysRole.roleCode" />
            </el-form-item>
            <el-form-item label="描述">
                <el-input v-model="sysRole.description" />
            </el-form-item>
            <el-form-item>
                <el-button type="primary" @click="submit">提交</el-button>
                <el-button @click="dialogVisible = false">取消</el-button>
            </el-form-item>
        </el-form>
    </el-dialog>

    <!--- 角色表格数据 -->
    <el-table :data="list" style="width: 100%">
        <el-table-column prop="roleName" label="角色名称" width="180" />
        <el-table-column prop="roleCode" label="角色code" width="180" />
        <el-table-column prop="createTime" label="创建时间" width="180" />
        <el-table-column prop="description" label="描述" />
        <el-table-column label="操作" align="center" width="280" #default="scope">
            <el-button type="primary" size="small" @click="editShow(scope.row)">
                修改
            </el-button>
            <el-button type="danger" size="small" @click="deleteById(scope.row)">
                删除
            </el-button>
            <el-button type="warning" size="small" @click="showAssignMenu(scope.row)">
                分配菜单
            </el-button>
        </el-table-column>
    </el-table>

    <!-- 分配菜单的对话框 
// tree组件添加ref属性，后期方便进行tree组件对象的获取
-->
    <el-dialog v-model="dialogMenuVisible" title="分配菜单" width="40%">
        <el-form label-width="80px">
            <el-tree :data="sysMenuTreeList" ref="tree" show-checkbox default-expand-all :check-on-click-node="true"
                node-key="id" :props="defaultProps" />
            <el-form-item>
                <el-button type="primary" @click="doAssign">提交</el-button>
                <el-button @click="dialogMenuVisible = false">取消</el-button>
            </el-form-item>
        </el-form>
    </el-dialog>

    <!--分页条-->
    <el-pagination v-model:current-page="pageParams.page" v-model:page-size="pageParams.limit"
        :page-sizes="[10, 20, 50, 100]" @size-change="fetchData" @current-change="fetchData"
        layout="total, sizes, prev, pager, next" :total="total" />

</template>

<script setup>
import { ref, onMounted } from 'vue';
import { GetSysRoleListByPage, SaveSysRole, UpdateSysRole, DeleteSysRoleById, GetSysRoleMenuIds, DoAssignMenuIdToSysRole } from '@/api/sysRole';
import { ElMessage, ElMessageBox } from 'element-plus';

const doAssign = async () => {
    const checkedNodes = tree.value.getCheckedNodes(); // 获取选中的节点
    const checkedNodesIds = checkedNodes.map(node => {  // 获取选中的节点的id
        return {
            id: node.id,
            isHalf: 0
        }
    })

    // 获取半选中的节点数据，当一个节点的子节点被部分选中时，该节点会呈现出半选中的状态
    const halfCheckedNodes = tree.value.getHalfCheckedNodes();
    const halfCheckedNodesIds = halfCheckedNodes.map(node => {   // 获取半选中节点的id
        return {
            id: node.id,
            isHalf: 1
        }
    })

    // 将选中的节点id和半选中的节点的id进行合并
    const menuIds = [...checkedNodesIds, ...halfCheckedNodesIds]
    console.log(menuIds);

    // 构建请求数据
    const assignMenuDto = {
        roleId: roleId,
        menuIdList: menuIds
    }

    // 发送请求
    await DoAssignMenuIdToSysRole(assignMenuDto);
    ElMessage.success('操作成功')
    dialogMenuVisible.value = false

}
const defaultProps = {
    children: 'children',
    label: 'title',
}
const dialogMenuVisible = ref(false)
const sysMenuTreeList = ref([
    {
        "title": "系统管理",
        "name": "system",
        "children": [
            {
                "title": "用户管理",
                "name": "sysUser",
                "children": null
            },
            {
                "title": "角色管理",
                "name": "sysRole",
                "children": null
            },
            {
                "title": "菜单管理",
                "name": "sysMenu",
                "children": null
            }
        ]
    },
    {
        "title": "数据管理",
        "name": "base",
        "children": [
            {
                "title": "地区管理",
                "name": "region",
                "children": null
            },
            {
                "title": "商品单位",
                "name": "productUnit",
                "children": null
            }
        ]
    }
])

// 树对象变量
const tree = ref()

// 默认选中的菜单数据集合
let roleId = ref()
const showAssignMenu = async row => {
    dialogMenuVisible.value = true
    roleId = row.id
    const { data } = await GetSysRoleMenuIds(row.id)   // 请求后端地址获取所有的菜单数据，以及当前角色所对应的菜单数据
    sysMenuTreeList.value = data.sysMenuList
    tree.value.setCheckedKeys(data.roleMenuIds)   // 进行数据回显
}
// 分页条总记录数
let total = ref(0)

// 定义表格数据模型
let list = ref([])

//分页数据
const pageParamsForm = {
    page: 1, // 页码
    limit: 10, // 每页记录数
}
const pageParams = ref(pageParamsForm)     // 将pageParamsForm包装成支持响应式的对象

// 搜索表单数据
const queryDto = ref({ "roleName": "" })

// 页面加载完毕以后请求后端接口获取数据
onMounted(() => {
    fetchData();
})

// 搜索按钮点击事件处理函数
const searchSysRole = () => {
    // queryDto.value.roleName = ""
    fetchData();
}

const resetData = () => {
    queryDto.value = { "roleName": "" }

}

// 远程调用后端分页查询接口
const fetchData = async () => {
    const { data, code, message } = await GetSysRoleListByPage(pageParams.value.page, pageParams.value.limit, queryDto.value);
    list.value = data.list;
    total.value = data.total
}
// 控制对话是否展示的变量
const dialogVisible = ref(false)

//进入添加
const addShow = () => {
    sysRole.value = {}; // 重置为一个空对象
    dialogVisible.value = true
}

//表单数据模型
const defaultForm = {
    id: "",
    roleCode: "",
    roleName: "",
    description: ""
}
const sysRole = ref(defaultForm)   // 使用ref包裹该对象，使用reactive不方便进行重置

// 添加角色
const submit = async () => {
    if (!sysRole.value.id) {
        const { code } = await SaveSysRole(sysRole.value);
        if (code === 200) {
            dialogVisible.value = false
            ElMessage.success('操作成功')
            fetchData()
        }
    } else {
        const { code } = await UpdateSysRole(sysRole.value);
        if (code === 200) {
            dialogVisible.value = false
            ElMessage.success('操作成功')
            fetchData()
        }
    }
}
// 删除数据
const deleteById = (row) => {
    ElMessageBox.confirm('此操作将永久删除该记录, 是否继续?', 'Warning', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning',
    }).then(async () => {
        const { code } = await DeleteSysRoleById(row.id)
        if (code === 200) {
            ElMessage.success('删除成功')
            fetchData()
        }
    })
}
// 修改按钮点击事件处理函数
const editShow = (row) => {
    sysRole.value = row
    dialogVisible.value = true
}
</script>

<style scoped>
.search-div {
    margin-bottom: 10px;
    padding: 10px;
    border: 1px solid #ebeef5;
    border-radius: 3px;
    background-color: #fff;
}

.tools-div {
    margin: 10px 0;
    padding: 10px;
    border: 1px solid #ebeef5;
    border-radius: 3px;
    background-color: #fff;
}
</style>